Effect of aspect ratio on hydrokinetic energy harnessing using cylinders in VIV

Smooth, rigid, circular cylinders on elastic support in flow perpendicular to their axis undergo vortex-induced vibrations (VIV) over a broad range of velocities. VIV converts hydrokinetic energy to mechanical in the oscillating cylinder. Tip-flow introduces three dimensional effects reducing the ef...

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Bibliographic Details
Published in:Journal of ocean engineering and marine energy 2022-05, Vol.8 (2), p.217-232
Main Authors: Duranay, Aytekin, Kinaci, Omer Kemal, Bernitsas, Michael M.
Format: Article
Language:English
Subjects:
Aspect ratio
Circular cylinders
Coastal Sciences
Cylinders
Elastic supports
Energy
Energy conversion efficiency
Engineering
Engineering Fluid Dynamics
Fluid flow
Mechanical Engineering
Momentum
Oceanography
Offshore Engineering
Oscillating cylinders
Oscillations
Renewable and Green Energy
Research Article
Reynolds number
Shear
Shear flow
Shear layers
Three dimensional flow
Vortex-induced vibrations
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Summary:Smooth, rigid, circular cylinders on elastic support in flow perpendicular to their axis undergo vortex-induced vibrations (VIV) over a broad range of velocities. VIV converts hydrokinetic energy to mechanical in the oscillating cylinder. Tip-flow introduces three dimensional effects reducing the effective length of the cylinder which provides the transverse lift force to induce oscillations and consequently the energy in the oscillator. In this study, we investigate experimentally the effect of the cylinder aspect ratio on hydrokinetic energy harnessing. Experiments are conducted in the Reynolds number range 15,000 
ISSN:2198-6444
2198-6452
DOI:10.1007/s40722-022-00226-1